Dr. Reckeweg Lemna Minor Mother Tincture Is a catarrhal remedy. Lemna Minor acts especially upon the nostrils. Nasal polypi; swollen turbinates. Atrophic rhinitis. Asthma from nasal obstruction; worse in wet weather. Chronic sinusitis is a condition in which the sinuses inside our skull become inflamed for months and years together. This condition can considerably reduce ones quality of life. Patients suffering from chronic Sinusitis complain of difficulty in breathing from nose, headaches, pain and tenderness in the face.